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I read all of the other definitions, they are all wrong! 'LOP' is used as a commonplace description in the California Department of Corrections since at least the 80's. So many inmates over the years going home have made it popular terminology on the street too. As an inmate, 'LOP' status means 'Loss Of Privileges', a result of said inmate not following policy... Among the correctional staff, it means "Low Overall Performance"... though no officer or supervisor I ever asked, could ever verbalize what it meant or stood for! So, I figured it out perfectly for that environment!
Inmate... "Bitch, dat's the last time you pull dat shit on me and don't cook! You on LOP status til you gain some respect fo' me! Get me a Hennessy!"

C/O... "What a LOP! He didn't hand out the TP (toilet paper) on Third Watch!
by jon2guapo May 26, 2013
Loss of precision. A LOP is an error when a variable in java has a value much bigger than its limit.
Public static void main urbanUp()
Public static void main (String args)
*the max value of a Short primitive is 32,767
*since the variable is too big, it will not be handled
*correctly,thus Loss of precision(LOP)
Short bigVariable = 76,832;
by Scottie Davis December 10, 2009
1) Acronym - Laughing Out Pork Sausages - To Laugh so hard that pork sausages are emitted from the mouth.

2) To cause embarassment, or to make another look stupid. See Owned.

Other Variants: "LOPS Posh", "LOPS o'r tu ol" (english - "Lops from the behind)

Origins: "LOL" (to "laugh out loud"), "Pork Sausages" (also known as meat tubes).
1) Did you see that? That was very funny. *Laughs, pork sausages are emitted from the mouth*.

2) Har Har, you were LOPS'd.
by J "Of the Jungle" H December 09, 2007
its the new LOL. commonly used on Instant messanger and online chats. defining laughing out loud.

LOP stands for laughing on people.
your so funny you made me LOP
by CaptianRonald July 27, 2009
Acronym for "Laughing out poop"
Knock knock.
Whose there?
Orange Who?
Orange You glad I didnt say world domination?
wow did you just shit yourself.
yeah man.
by bardstudent April 03, 2010
This term refers to the undisputed LOP(Life Of the Party)
and can be given at any event that involves alcaholic beverages. Usually on Long Island when the LOP is awarded hi5's and hugs are shared by all.
Party goer 2: "should we crown him LOP"
Party goer 1"loplop"
Party goer 2: "life win"
by IMUNDERGROUND September 01, 2009
The new version of the internet slang "lol". Contrary to the internet slang "lol", in the instance of using the term "lop" the user is literally laughing when looking at the computer. The term "lop" means laugh out pie, or lots of pie. When lop is most commonly used is when a friend says a funny joke during an instant messaging session, making the opposite friend laugh hard enough to make pie come out of their mouth, regardless of the pie being or not being in their mouth in the first place.
555-6757: dude we have to read romeo and juliet for english

555-7870: seriously? isn't that the book where they kiss and talk and then kiss and die

555-6757: lop

555-7870: can i have some pie?
by the person who's awesome August 15, 2009
lack of potential, morons!
Van is such a lop!
by Smelly January 07, 2004